/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneEvaluationField.h
A key that uniquely identifies an entity by its owner and ID
struct FMovieSceneEvaluationFieldEntityKey
uint32
EntityID
The identifer for the entity within the owner.
TWeakObjectPtr<...
EntityOwner
The entity owner - either aUMovieSceneSectionor perhaps aUMovieSceneTrack.